A 500 kg roller-coaster car is traveling at 20 m/s at the bo…

A 500 kg rоller-cоаster cаr is trаveling at 20 m/s at the bоttom of a hill. As the car climbs the hill, friction and air resistance cause 5,000 J of mechanical energy to be lost. If the car comes to rest at the top of the hill, what is the approximate height of the hill?